AA 9909 then AA 4225 at Phoenix
Salt Lake City → Phoenix → Carlsbad McClellan-Palomar
Timetable, Phoenix time
14:30AA 9909 from Salt Lake City at the gate
11:31AA 4225 to Carlsbad McClellan-Palomar leaves the gate
21 h 01 apart on the timetable, overnight
AA 4225 leaves 21 h 01 after AA 9909 arrives on the timetable: more than half a day, so not a connection we count.